I have a 2001 Dyna lowrider that had engine mods performed before i bought it one mod was SE 204 cams. When the bike is cold it is like the engine is in a bind & wont rev past 4000 RPM but idles fine. Even after warm up if it idles again its like its in a bind & revs really slow not gettiong past 4000 rpm. If i run the bike as you go you can feel it gain power and if you stop at like a light you can rev it to redline but if you sit there to long again its like it loses power. I thinking a wet sumping problem maybe? this is my first twin cam & im lost.