I have an older Ridgid floor model drill press. Model: DP15501. My chuck key (817339) has completely fell apart in my hand. All of the replacement site pages.."they're obsolete." Anyone familiar with a site that might house older, obsolete tooling? I did locate a key earlier but didn't really want to spend $40 for one. Wondering if some of the other 1/2" chuck keys which are readily accessible would fit the chuck on this Ridgid tool without much free play?