I did it to my old 14000FA but the upgrade is designed more to incearse the smoothness of the drag than increase the pressure.

Well worth $20 or so though

 Thanks Matt.Can i ask u what you thought of the Spheros for what its worth?Ive put a Saragosa handle on mine and will be using it for mega big kings here in SA.

for the price range though not sure how one would fair under the punishment it sounds like your going to give yours

 spheros and saragosa are both good for their simplicity, the gear boxes are easy to maintain and less problems can occur compared to other reels. From my experience they are also tanks so they should be rigid enough to handle decent kings. Enough big kings is sure to wear any reel's gears at the end of the day though 

just note that the carbontex washers will smoothen the drag at the higher settings only. 

As a general rule felt is smother at lower settings and carbon at higher settings

 Don't forget the other carrier bearing in the handle shafts about another $20ish easy to fit.

It already has 20kg of drag anymore and the fish will pull you in the water. Use the drag to wear the fish out rather than trying to skull drag it, that is what makes it fun.With 37 kg line you really should have the drag set at 12 kg anyways, 1/3 breaking strain of the line.

I also did the upgrade and I only fish with 5 -7 kgs of drag pressure. Has the Spheros for 5 years and its as good as the day I purchased it and its caught a sh*tload of fish over the years. Great value for money reel.

If looking to but for not much more get a Saragosa theres a new model coming Sept and most places have them heavily discounted only about $40-50 difference from the Spheros, better handle etc

 Jetty rat god advice but ya need to put the breaks on straight away on big kings especially where we fish for them untill ya get them in more open water then can back it off..These kings can be more than 30kg.I have mucked around with the reel and had a mate take a jog with the reel locked up and doubt the reel has 20kg of drag,feels more like 12 but i havnt tested it out on scales yet.I usally fish for them on live bait on 24 and 37kg tackle but got the spheros for popping and stick baits.I originally bought a saltiga 4500 for it but to my disbelive the first time i used it ever i hooked a thresher on it and got spooled on 50lb braid before i could even blink and the drag knob melted so much for that reel haha.i fixed it and sold it not worth 900 bucks.Thanks for your replies guys ill get some carbontex washers it has a saragosa handle allready.And hopefully put it to the test.Looking forward to see what the new saragosa will look like..

when i first got into jigging , lasted one season well 1 fish actually a100 pound 160cm sambo that made me and the reel piss for 40 min ,had smoke coming of the drag on the first 2 runs ,was sticky as after that so sold it

 i guess that's spin reels for ya. There not like tiagras ect. A mate of mine just spent a week chasing gts on nomad charters and they had 2 18000 stellas fail. On one the spool was spinning on the shaft and reverse bearing went on the other.

 id some Gts just arent meant too be caught the pressure they would put on the reels would be intense. Not sure about the spheros but my brother has the gosa 18000 and caught plenty of fish on it. good reel for the money :)

I've done it to my 14000fa.  The felt ones disintegrate over time and make a bit of a mess.

Please also note when order them, the drag washers are different between the FA and FB. 

Hi mate, Our reel servicer can put carbontex drag washers into all spinning and overhead reels. Just leave the reel with us and he can cut and fit carbontex drag washers to any reel. For spinning reels its only $27 which includes having it installed with Cals grease.

Hi Jetty Rat,

To service your Sustain 5000 it is $36 for Fishwrecked members.