Since I installed my Rinehart slip-ons, SE Air cleaner, and altered my TFI to their recommended settings for a Stage 1 Touring setup, my Glide now backfires on deceleration, mainly in 3rd and 4th gear. Do I need to adjust my TFI? I have also lost SUBSTANTIAL mpg, and this happened with my old bike too when I switched to the Stage 1. I know that I added more fuel with the TFI, but on many posts on here it seems like you guys are still getting good mileage. What kind of mileage should I expect with this kind of setup? THANKS!