Hello forum readers, I have read most of the carb forum threads looking for some direction and experienced based advice. My XS2 was running a little strange after a carb refurbish, diagnosis - incorrect float needle valves that I have corrected now. Now my concern is that fuel and oil mixed was sat in the sump for some months, static run only during that time, what damage might have occurred to seals etc during this time? Is it worth throwing in some sacrificial oil on the rebuild to flush through all the crank and engine seals then dump it before replacing with fresh oil for a second time or to replace the engines seals anyway to save problems further down the line. Or am I being over cautious?