School me on L-Jet, 2 questions for an L-Jet newby Options

['73-914kid]

Okay, so I've worked extensively on D-Jet 914's, and carb'd 914's, but my experience with L-Jet is about zilch. So, two questions on the recent purchase.

1) The car starts no problem, fuel pump is obviously running, but does not prime when you initially turn the key on, as I'm used to with D-Jet cars. Is this a fuse, relay, wiring problem, etc.? Obviously the fuel pump is working when the engine is spinning, but not priming. (Takes a few cranks to fire up after sitting more than a few hours)

2) The car idles wonderfully when cold, but as the engine gets hotter, the idle seems to hold around 1800 RPM. If you slip the clutch with your foot on the brake, so the rev's drop below the 1500 RPM range, the idle falls right back down to 900 RPM. I'm assuming this isn't a vacuum leak, since L-Jet won't run very well with a major vacuum leak... I took the dizzy cap off and hooked up a hose and pulled a vacuum, and the advance mechanism works smoothly and snaps back as it should, but is there something else that could be causing this issue within the distributor, or should I be looking elsewhere?

TIA, Ethan