I bought a S&A chckered arched MSH for my TLE II, but the tabs on the end of the MSH that retain the grip safety are longer and when installed seem to keep enough tension on the grip safety to engage the firing block lifter arm(what a great idea), pushing the tip up enough that I can not reinstall the slide. I really like this MSH, any ideas or other types I can use. Appreciate any help.

Some fitting of the MSH is usually required. You will need to fit (file down) the tabs, until the grip safety operates freely.  Just go slow, and check your work often. Once the MSH is fully installed, and the grip safety operates freely, your done.

Thanks for the help.