Ok - Mozzy -
Scratch what you are thinking now and start fresh.
Here's the rundown of what I've seen - it sounded like you had it going really well one day and then it was hesitating on the first half of acceleration. This is the LSN. It sounds like, however, the hsn was still a little off also - because when you adjusted and got the LSN right the car was getting too hot
NOW.... IMPORTANT... the HSN should not be 2 1/4 turns out. ONLY the LSN. There is no mid speed needle. Here is a link to the page where I spoke of the locations of the valves and with photos
I will speak in left and right as you are looking at the carb. So I know some people are using the right side to adjust the LSN, but I have found it to be rather unsecured and subject to vibration moreso than the little screw on the left flange side. They BOTH do the same thing. I have the right side (BIG screw) screwed IN all the way just till it's a tightened. Don't overtighten any of these screws. I have the left side backed out to 2 1/4. The HSN is backed out 3 1/4 from in. THe idle see photos.
THere is no way you would get it started with the HSN at 2 1/4 - sorry about the blisters.
This is all very common especially if you don't have a friend or LHS to show you in person what to do and get a rough idea.
I would also recommend replacing your glow plug at this point unless you take it out and it's totally fine. If you still have trouble starting (once you've adjusted to starting points) then replace it anyway. Sometimes you can't really tell visually (sometimes)
On the shock - I don't remember for sure - but I am pretty sure that metal piece (see photo) should just pull out of there. Try turning the screw more to see if it backs out first, but if it doesn't do anything pull. I think they get pretty wedged. They take a lot of impact
SO start over on the needles. Idle see photo. HSN 3 1/4- 3 1/2. LSN 2 - 2 1/2. When you tighten in don't OVER tighten
There's a fast learning curve. Once you get past it you'll wonder why you had so much trouble.
Also - before you act on frustration, just put it aside and think on what was done. It will give you a better understanding and will give others the opportunity to help in the meantime.
You'll get er screamin