latch66
I've got the T48 that's the one with the rubber chevron on it.
Mine have sink holes on the flat side but not all of them , less then half and not real deep, so I just tried to put those ones where they wouldn't be seen. On the other side a couple of them have a little raised bump inside the "V" of the chevron, again I just grouped them together and put them where they wouldn't be seen.
I did have a little problem installing them. The top run would separate, what a pain in the neck tring to get them bact together without taking them off.
I only need 77 track blocks for my Sherman which got me wondering if I did something wrong.
Overall they look great just very time consuming.