Hi Gary
I'm from the UK and been into these bikes for many years now, I had the LT250S when they first came out in the 80's
If you want the cylinder ears welding, jug porting and boring I can get it done for you properly by an experienced 2 stroke machine shop.
I had my 250 cylinder done last week and it turned out great, have a look at my 250 build thread in the members build thread section
Having my 500 jug done the same in the next few weeks
I'll send you a email
I wouldn't use Philip Charles Leisure IMO, they are cowboys and there customer service sucks big time.