Naw.....the kero or ms will just make sure you've washed out any residue from your adventure with rocks. You don't need them passing through your fuel pump. Go ahead and reinstall the tank....make sure you use the ethanol rated blue-lined rubber line wherever you have rubber line and add a second disposable filter between the pump and the carb. I tried one right off the tank and it caused me issues when the tank got down below 1/2 full. None experienced when adding it between the pump and the carb. Make sure the filter is E-10 rated.....some plastic filters are reported to soften with the blend. Haven't had that problem as I like the metal-cased filters.
The rust will come out of the tank so you might try backflushing the filter to see how much is being scoured. It may take a couple cycles to get it all out of the tank. I haven't had any issues since the initial "vapor-lock/phase seperation" was cured by insulating my steel line up in front of the valve cover.
Dave
