verslagen1 wrote on 11/01/08 at 09:48:00:Lancers the expert, but here goes...
fix the exhaust leak, either use a clamp that seals, aluminum sheet bushing from your favorite beverage, or hi-temp rtv.
test for the correct main jet, max out the rpm's while going up a good hill (70 to 80 mph in 5th) correspondingly slower in other gears on steeper hills. It should take WOT to maintain speed. Now back off from WOT 1/8 turn, does it seem to pick up? yes bigger jet, no smaller jet or just right.
My guess is that you have the white spacer mod done and it's a little too aggressive causing it to hesitate when it hits the main.
Sorry for hijacking- but I'm so glad you mentioned RTV
Even after buying a new clamp for my muff and shimming it, it still leaks. Luckily I have a full tube of RTV laying around from the valve cover leak!