When I did mine I just stayed away from the groove as much as possible with the resin and then "babysat" the the groove appropriately. i.e. I took a piece of 220 grit folded it over tightly and cleaned the groove. It's Kevlar I believe and is pretty durable. Also don't get over zealous with your sanding and try no to get resin in the groove and you'll be fine I'm sure. I used the credit card method of applying the resin and worked outwardly from the groove. Hope this helps PM me if you have any other questions I'm glad to help. Just my experience by the way. I also did the same with the primer and paint babysitting all the way through provided me with exceptional results.



Tim