Thanks CDF :). It's my pleasure to share my (slow) progress and it is icing on the cake to hear that it can be helpful/interesting to others. My modding skill is obviously not setting any high bars but I do hope to get a few good ideas out there.
S_D thanks for your suggestions I'm having a look around to see what's available locally.
***
Cross your fingers guys. I got my TMS-200 back from Koolance. Time to shut down and plug her in...
If I'm back in 15 minutes then everything is fine and dandy.
If I'm not...well...
Just wait longer! :D
In all seriousness I hope it works. I don't want to deal with another RMA.