You should post in the MyECU sections, I think this section is for the board itself (software, administration etc)

What do you set the fast idle lever at? I now have extremely good starting both hot and cold but I'm not sure what did it. Some of the ingredients may be:
- generous valve lash (which you already have)
- rerouting of the ground strap from battery (to the engine block instead of rear subframe)
- earliest possible injection phasing (InjAdv)

My InjAdv is 720 at (0,0) and 705 at the other cells lower left. You have a value of 600 so I don't think this makes a lot of difference but you could try it.

I can't post my whole InjAdv table because the post size limit is too small. Basically I mimic SoI (Start of Injection) instead of EoI (End of Injection). This is calculated in a spreadsheet, from engine speed and pulse width for each cell.

This page explains starts a little - http://www.cajinnovations.com/MyECU/FirstSteps.htm

Basically you want to change the 20C entry of the Prime ( by one at a time ) and Boost lines ( by 5% at a time ). Try reducing first. There is an initial prime pulse when you crank in addition to the per cycle prime.

Given you have a consistent start do this over a few days changing one variable at a time.
Throttle position is important too, keep this the same.
I usually start with no throttle and increase slowly as it fires.