Hi mr mog. Welcome to the forum.
Sounds like you've got a nice little setup there. As a side note, there is a chipper on ebay at the moment complete with a mog reversing box - could be worth a look. I think they look great with a front mounted chipper running into a chip box!
Tuning wise it seems like this is quite a delicate affair. I'd like to do mine too but I'm not sure if there is anyone local who can take it on. I don't want to melt anything, and it sounds like that is quite easily done if the job isn't done correctly!
Edit... We need pictures!
