Hint: I won't show the battery cap (for now) but it can be adjusted from both inside and outside, the outside adjustment mechanism being more of a fine-tune adjustment once the inside is set.
Hint 2: Original manufacturer's name was a 3 letter acronym and I don't know what the letters stood for. Probably out of business at this point as I cannot find a website.
Hint 2: Original manufacturer's name was a 3 letter acronym and I don't know what the letters stood for. Probably out of business at this point as I cannot find a website.