MY JTS drops the chain onto (but not engaged with) the smaller chainring when shifting at the front. Only in this direction (large chainring to small), and not even with terrible chainline. Since it's still newish, I'm letting the dealer sort it out.
The mechanic is convinced it's somehow due to either a mismatch b/w chainrings and 10 speed chain, or (his #1 theory) there's not enough diff b/w large and small chainrings. Chainrings are 36/46, freewheel is 105 12-25, cranks FSA gossamer compact megaexo.
Me, I'm thinking the FD just need to throw more. Simplest solution and all...
So...is the mechanic talking crapola? Is there a chance he's right?
Asking this before he goes swapping chainrings on me, thanks