Hi Thanks- for your reply- the sand was After the filter in the filter area in the corners - but very small amount too. Engine Breather Hooked up -AI delegated with plug in all drains hooked up -two drains go to airbox- 1 over flow for carbs fuel and 1 condensation Of from cold box and air warm And excess engine oil crankcase - By the way I have seen this before, but never could figure out where from. Gone over everything I can think of every opening- was wondering if anybody else seen this and where from. Thanks Bob