This uds has been almost complete for 2 weeks, but the lid mod is kicking my butt. I could not get a webber, so i found a uniflame on craiglsit. I cut the flange off, put some stove gasket around it and cemented it in place with the cement provided. When i go to bolt the darn thing up, i get a gap in some places. Could i use automotive high temp rtv selaent to fill the gaps. Dont want to take out the family