Hi and welcome Jay.

The heel corners of the tele necks often need a bit of sanding to get a snug fit. Though 2 mm does not seem right. The PBG tele and strat necks are evry different - tele neck is flat at the end of the heel, while the strat neck is quite curved! I don't think a strat neck would fit the tele. And the pickguard is not designed to hide that much.

As far as posting pictures - they must be less than 1Mb. Try reducing the file size and see if that helps!