Finally got a reply from probe,the endfloat is supposed to be between .005"& .020" according to the sales manager.That puts what I have in a good position.The clearance specification seems to me at least, to be very large compared to anything I've seen anywhere,which is what I find disturbing.Thanks for the replies I had considered longer pins,but Where to get them?& prehaps some type of shim,or would that cause other problems?On the other hand considering the replies just run them as is,after all they are at the top end of what seems to be considered ok tolerance & as always a little loose is always better than a little tight.