Thanks chaps seems with a bit more practive my orbits are getting better and better, I seem to average around 55k now with more and more fuel left over for the retrograde burn, all is good I can get pretty close to the Space Centre now, just with a nice long burn as soon as the Space Centre comes into view over the horizon, its a bit trial and error but my last attempt got within swimming distance of the base so I was partucularly chuffed with that one 8)