Threaded valve adjusters instead of the shim-over-bucket arrangement they currently have.

(...you're welcome, Ian!...but no, I couldn't care less if they ever put a kickstarter OR a breaker-point ignition on these babies, ol' buddy!)

Yep! Just like a good Single Malt Scotch, you might call me "an acquired taste" TOO.(among the many OTHER things you may care to call me, of course)