> Avocet/Ofmega and TA also made 41T rings for > the 144mm BCD. The TA rings are still available > and reasonably priced. Be aware you may have to > file the spider slightly for the chain to seat > fully with the 41T ring.
By the way, that effort will bring your low gear all the way
down from 40.5 gear inches to 39.5. (Assuming a 28 tooth big
sprocket at the rear.)
To me, it does not seem to be a worthwhile modification.
Fred "opinionated" Rednor
Arlington, Virginia (USA)