Hello FABO - I have installed a rebuilt 727 in my 66 Barracuda. Mounted to a 318. When I removed my 904 it never had any issues with leaking at the dipstick tube. I am now having leaks occur at the dipstick and I cannot seem to prevent the leaks. I've tried RTV red, and it did not work. Does anyone have any recommendations or ideas on how I can prevent a leak at the dipstick. And unfortunately like the 904 there is no bolt hold to fasten the dipstick to the transmission. Thanks!!