This is useful for those of us thinking about getting a new sender or just plugging up the hole with a bolt. It's really important to get the correct thread as forcing a parallel thread into a tapered hole can cause a really bad headache. Thanks to CBS for the info. Good Chaps and Chapess over there in the desert https://www.classicbritishspares.co...ing-units?mc_cid=cf0cc7c0f0&mc_eid=b536c85b60