Was it blue smoke though? mine smells but it smells of fuel... which is just rich running? well, I've done 900 miles since i had the bottom end done, so it may have used some due to that? I'm going to do another 100 miles to get it to a round 1000 miles and then dump the oil and change for fresh! (5W 30 isn't it?) fully synthetic or part?
So, this will just progressively get worse will it? how much has it set you back to have a valve seals sorted?