Hi, just recently purchased two 504's and both have loose bolt handles. One is quite loose fitting - both had metal filings when I pulled the handles out of the bore of the bolt. The design of this bolt handle fastened to the bolt is quite wimpy to say the least! I did some reading and most suggested silver solder. Looking for some opinions on other methods that would work and if anyone would like to tackle this job - send me a PM if interested. Thanks