Dear all - have a baylinder maxim family boat with a Mercury-Force 125 - has low compression in bottom cylinder - have opportunity to buy a 1990 johnson looper with yet another low cylinder for a good price ( IE picking a better motor to rebuild ) - any thoughts about the 1990 120 VJ120TLASB ? How are these different from the mid to late 1990's Johnson / Evinrude 130s port wise ? What did johnson do to get 130 out of this similar package ? Is it ports and jetting ? What would it take to make this thing run like a 130 ? Please advise - thanks Rick