[lugerholsterrepair]

Ron, Congratulations on your shooter Luger. I would do exactly as you are thinking. Put in a spring kit. This MAY solve the problem but it may not for a couple of reasons I can think of.

Depending on which parts are mismatched. Is the toggle/bolt mismatched to the barrel reciever? When you dismantle the pistol and re insert the bolt to the top cannon, is it a very tight fit?

Also, you say the pistol has been reblued. The Germans left the inside frame rails that slide against each other..polished and in the white, no blue because they tended to spall against each other during fireing and cause just the problem you are experiencing. This may be another area you might consider.

Good Luck!
Jerry Burney