[Mrmerlin]

if you have an older slide on stud you can fit the new screw on cap,
after you drill into the center of the old stud fit a screw that fits the new cap threads and leave about 5 threads showing JB weld the screw into the stud,
cut the end of it off leaving 5 threads refit the stud now you wont lose the hot post cover with a slide on stud cap