Poorly advised and used CETOL THB plus as a base coat (x2) on Hardwood sapele new drive gates... Was then gonna put Cetol HLS on as final coat as instructed at stockists... HLS was difficult to apply so rang Sikkens and they tell me it should have been other way around!! Rather not strip back to new wood as gates are hung so should I worry and I also have some Osma extra and wondering if that would be good for top coat???? Help please...