Stupid question but have you had the glow plug out and if so made sure you put the copper washer back when replacing it? It shouldn't really be fizzing with fuel. Also if you've had the glow in and out several times whilst breaking the engine in the washer may have become hard and compressed so not sealing the plug properly.
Did you get a manual with it as it should explain in there how best to set it up and where approximately you should end up with a fully run in engine, i.e. factory setting is 3 1/2 turns out and once broken in should be in the area of 2 1/2 turns or similar.
Try and find the factory default settings for your engine as this will give you a base setting to return to if you get stuck.
Personally I would suggest setting your idle up first so that the car will happily tick over for about 30 - 40 seconds without stalling. Then gently accelerate the car and run it round for a bit to clear any excess fuel and then give it a short burst of full throttle. If it's coughing and spluttering, or appears to be holding back, whilst at full throttle it's more than likely running too rich and you need to adjust the HSN 1/8 of a turn at a time to get it nice and crisp.
If it's screaming it's head off at full throttle and there's no smoke coming from the exhaust it's too lean. You should have a thin trail of smoke coming from it when at full throttle.
Then you can adjust your mid range so that you get a nice smooth pull away from tick over, if it bogs down when you go to accelerate from a standstill after about 20 secs of ticking over it's too rich and if it doesn't drop down to a nice smooth tickover but holds the revs up when you release the throttle it's too lean (mid range needle).
I would recommend not altering any of your settings by more than a 1/4 of a turn at a time and it may well be 1/8th of a turn will be sufficient.
I only race at club level so hopefully one of the big boy's of the sport will read this and may be able to offer more/better help.
