I'm sure the hull flexes a bit as it's plastic.. However I have never heard anyone having identified it as a problem! I would think that even if you installed an SS wear ring it wont stop the hull from flexing.. With SS ring and impeller you will wear the impeller more than the ring it self "if" the problem is something else..
I would try to investigate if the drive-line (shaft/impeller/alignment etc..) some how got damaged as it was running fine after the new impeller and tune.. How many hours dose a plastic wear ring last ? Is it always around the same hours ?
You could also try to switch to the stock impeller and a new ring to see how that combo lasts. I don't think the tune it self has any impact on the problem here!
Short answer: I personally don't think that upgrading to an SS wring would fix the problem in the long run!
I hope you find the source of the problem!
/Best Regards
I would try to investigate if the drive-line (shaft/impeller/alignment etc..) some how got damaged as it was running fine after the new impeller and tune.. How many hours dose a plastic wear ring last ? Is it always around the same hours ?
You could also try to switch to the stock impeller and a new ring to see how that combo lasts. I don't think the tune it self has any impact on the problem here!
Short answer: I personally don't think that upgrading to an SS wring would fix the problem in the long run!
I hope you find the source of the problem!
/Best Regards