Just had my van MOTd. Ouch. Even though I have sealed the load area with two thick coats of fibre-glass filled roof sealant water has managed to seep in to the sill and there was alot of welding to be done. (I have a wfp system installed). Any one else had this problem? How did you get round it? I know I could have it Speedlinered but didn't have the cash at the time. Will do on next van maybe!