So, after all was said and done with the new shift knob installation, there was about a Ό” gap between the bottom of the knob and the boot. I couldn’t recall how much there was with the original knob, but I got to thinking about how one of the stock shift boots from one of my Mazdas had a plastic cup-shaped piece on the bottom of the boot that sort of took up a gap and kept the top of the boot in shape. That piece came off one time when I was moving stuff around and I never got around to replacing it. Since my brain was working I decided to get some nylon washers from Ace and use them as a spacer/shape holder for the boot. I measured the shift lever and top of the boot and came up with 13mm and 29mm diameters. Went up to Ace today and picked up the washers. Ones I ended up with were 25.4mm OD (1”) and 11.4mm ID (0.45”)/14.3mm ID (0.56”). All were around 1/8” thick. Here they are side by side:
Put them on smallest one first and put things back together. The smaller one didn’t allow a lot of engagement of the knob on the shift lever so I tried the bigger one. Here is how they sat on the shift lever:
The bigger one did the trick. Here is the final result:
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