I have a dumb question, with all the problems with the lack of midrange punch of the 103, is there a way to put a larger engine in without a lot of modifications? It's either that or a new cam! Already have stage 1, air cleaner, new head pipes and mufflers. When hot this Trike has no guts, it can't maintain 75 in 6th on even a shallow grade. I will be dynoing the Trike Tuesdyay.