Im no 109 experten, but i too love flying the 109 K-4. She's a total monster, which if it wasnt for the difficult 30mm cannon, it prob should be perked. Thankfully, most people find it incredibly hard to hit anything with the tatergun and give up on it far too quickly.
What are some convergences you recommend (and yes, obviously I won稚 be shooting the tater at d600, I値l be getting close, very close)?
Set convergence in close. 250 is a good point, IMO. Fire when icon changes to D200 or the aircraft fills your screen. Watch out for collisions tho. You only got 60 spuds, so fire em one (two max) at a time - eg one audible 'chunk' sound. I find that almost all kills will be snapshots too at close distance.
What fuel load outs for what situations/distances?
YMMV, but i take either 100% and DT, or 75% and DT depending on how target rich the anticipated environment will be. Drop the DT as soon as you get into a scrape or earlier. IIRC, 100% will keep you aloft for about 35 mins? DT extends that again. Keep an eye on the E6B, and you cant go wrong.
What about what exact speed does it compress beyond control (and while I知 at it, what is the elevator trim up/down)?
Actually its not compressing. It just suffers from aweful control-surface authority at higher speeds. A 109 above 350 is not flying it to its strengths. Dont know the figures off the top of my head, but its a progressive thing - eg you progressively loose authority (elev, aileron etc).
Turns better to the left right?
IIRC, to the left.
The best way to fight in it is to energy fight unless you can obviously win a knife fight, etc, etc right?
Yup. But due to its wicked acceleration and high top speed - dont be afraid to mix it up for a bit - this is where you can generate good snapshot opportunities. Get in there and get turning and go hunting for those snapshots, if you start loosing too much angles, convert to an E type approach. Even the K4 turns fairly well.
Alternatively, keep the fight going upwards and you will soon see most aircraft in the LW set gasping for breath - Spit 16s, and Ki84s will keep you honest tho.
Any other tips I should know besides the tater takes time, long WEP, and great climb haha?
1. Map the elevator trim somewhere handy. You'll need this to save yourself from embarassing lawn-dart impersonations when you get your ship out of control.
2. Gotta learn to use full power judiciously. Keep the 109 in her sweet-spot speed range at all times: ~230-300. Get very used to yanking back that throttle!! Its far far too easy to overspeed and get out of control and blow E.
3. The tater-gun needs almost twice the lead of a 50cal equipt aircraft. Fire (its actually more of a 'lob') taters by tappin the fire button. Fire ONLY the tatergun - forget the 12.7mm even exist and ask you ground crew to remove em. Dont use the MGs to 'feel' out a shot. If you're hitting with MGs, you'll miss with the taters. Firing only taters also means that if you see a hit sprite, it has to be a 30mm hit, and normally thats game over. Single sprite, means you free for the next target/victim
They're my big-3 tips for the 109K.
Im sure someone else who is a more regular 109'er than me will chip in soon.