Thanks I'll give it a go, even with the external trim full reverse and stick full reverse it doesn't stop going forward. I'll check each of the trimmers on the boards and all the other details you posted. I also found some ABS i'll use for repair probably after Christmas at this point though.
Had another go with the working one today and definitely still puts a smile on my face. I ordered bearings, another battery and tires as well now that it's proven worthwhile.
Once I get the 10 posts i'll have to throw some pics here.