You can't retard the timing on a Sportster (no points), it has preset electronic timing.

There's a big difference between the alcohol used in printing ink and rubbing alcohol. As much difference as between Moonshine and Red Vino. The alcohol used for diluting the water in gasoline after a long cold winter is not the same as alcohol for in your local drug store.

I let my old Ford tractor set for a couple of months without starting it, the gas was as dark as coffee and slightly sticky. I had to flush the carb and tank with fresh gas to wash it all out. It was almost like sludge.

I had forgot to put kerosene in the tank with the gas.

Dance like no one is watching,
Sing like no one is listening,
Love like you've never been hurt.

1948 GMC FC101 1/2t Pickup w/270 and SM420
1948 GMC FC253 1t Factory 80"x9' Flatbed Dually
1948 Chevy COE 2 Ton 8'x15' Flatbed
1950 GMC 354-24 2 Ton 8'X12' Flatbed w/Dump Hoist
1953 GMC 454-30 3 Ton 8'x14' Flatbed w/Dump Hoist
1953 GMC 454-30 3 Ton Cab and Chassis
1942 Clarkator 6 MILL-44 Heavy Aircraft Tug
1942 Ford (9N) Moto Tug with 1/2 yard Loader
1947 Oliver OC3 HG-42 Tract-Crawler Bull Dozier w/6' Blade