Have an FSA Gossamer triple and need a new middle chainring (39T, 130 BCD). Will the 39T, 130 BCD middle chainring from a Shimano 105 or Ultegra set work as well as one from FSA? (Would keep the existing 50T and 30T FSA chainrings on the crank.)
Disappointingly, mine only has about 17,000 miles on it. But, too, more than 90% of the time I'm on the middle ring. I put on the 5th new chain tonight, and the chain slips whenever I pedal a little harder, such as from a stop. Only started slipping today with the new chain. I'd guess it slipped maybe 8 times in the span of 7 miles before I got it back home. I'm thinking the (new) chain wasn't damaged by such a short ride. Thoughts?