Steady David it wasn't in reference to your question, but to Simons answer to fixing the problems. A bit like if the question was "how do you get to xy or z" the answer being given as "I wouldn't have started from there" however that's not where John finds himself. He has already bought the not inexpensive kits, and apart from binning them, he is faced with making them work, the answer can't surely be just to give up and start again from a better kit - granted yours clearly fit that category!. Apologies if you thought It was in reference to your own valid question.
Bob -
OK - but you should have quoted the post to which you were referring. However in defence of Simon V - who is a colourful and sometimes outspoken contributor [and certainly we always need more of those!], he is not dressing up his views in some kind dishonest polite-speak . To me, he is simply saying what is readily apparent to many [especially from other coach building threads on here] but perhaps we do not have the honesty to say so.
As far as John's options go - well he could still give it up, stick it on Ebay and purchase a metal-bodied kit - and before you jump on me, that does not have to be an MMP kit - there are Westdale, the ex RJH ones, The ex- Classic one - all would surely be a much better starting point than the moulded options around. At least you are starting with a body that is around scale thickness and not made of Chobham Armour!
DJP