Hey guys here's my situation. A few months ago my ignition lock cylinder took a crap and I had it replaced with one from the same model and year car from a junkyard. That lock only came with 1 key. I been using this key by keeping one of my old keys on the same keyring for transmitter to work. My question is if I want a second key can I have any key cut to match my existing key as long as I keep using my old key on the same ring as I do now? Who would do this , hardware store, locksmith?