Hi av8tor1977, I still remember you, you were very active in the 'engine conversions' forum around 10-20 years ago.
At the time it was all about converting yard equipment to airplane use, it preceded the surge of Chinese manufacturers of gas engines, DLE, EME, RCGF...
I still have a few dozen converted engines from that period, I was always more involved in the process than the actual flying.
With this (small gassers) space taken by cheap (and varying quality) chinesiums these days, activity has shifted to glow-to-gas conversions as an alternative to electrics.
Different techniques and target markets, still the same innovations and excitement...
A lot of progress was made while you were away, hopefully you will get involved and contribute as you have done before.