Hey Redback, think it was a bit of a combination of inexperience and hitting it at the weird angle, plus driving it in too small of a space in the back garden.
Thanks for the lookout on the pin holders, will give then a check over.
I was looking to get the alluminium front plate, and saw the CF top plate, but wasn't sure about that. From what I can tell does the CF top plate mean removing the spur/pinion housing, would that not leave them more exposed and at risk of more damage?