I have a T@B 400 that I have owned for all of one week. I am having some difficulty with the entry door lock. Initially, I found that the door would not completely latch and I could actually pull it open even though it was locked. When I inspected the lock, I found that the top striker bolt was very loose. The latch bolt appears to be deploying normally and the bottom striker bolt is tight. I was able to adjust the top striker bolt by hand and now the door seems to latch more fully (although there is some play remaining when I pull the handle while locked that causes the door to open about 1/2”) but the top striker bolt is still loose. I’m thinking there must be a nut inside the locking mechanism to snug the striker bolt that I can get to only by disassembling the locking mechanism. Has anyone done this? Is it difficult? It’s below freezing here and I’d rather not attempt the fix if there’s risk I’ll screw it up. Thanks for your assistance.