On my 81'XS11 SH I installed new coils from Dynatek part number DC1-1 3.0 Ohm. It runs better except from idle up to 2000 RPM If you get on it too hard it stumbles, but if you let it climb to 2K and gun it you better be holding on tight. It seems that the vaccuum advance is chattering now on hard acceleration under 2K RPM. I replaced the hose ( it for sure is going to the tap behind the boot on #2 carb ). Any ideas?
TIA
TIA
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