I'm as a desperation point and I'm hoping I found the right place! We bought a business last year and inherited the Cornerpro 5700 underpinner. We continue to have a lot of issues with our CornerPro 5700 firing the nails. I have called Fletcher many times and talked to the same gentleman. First he told me it was likely that we needed oil, so I went and bought oil and continue to oil it like crazy. That didn't solve it. Then he said the hammer needed to be replaced so I bought one and replaced it, that didn't solve it. I brought in a handyman and we inserted washers where the Hammer Block attaches to give room for the nails. That worked for awhile, but now the issue is the unit doesn't seem to have the power to get the nails in. It will fire one that will barely get in the wood, but the second doesn't make it. I'm maxing out the air compressor to see if that would help, but it doesn't impact it at all. I've wasted so many v-nails and wood trying to get this machine working and my frustration level is maxed out. Plus now I can't build frames! I've asked Fletcher if they have anyone that can come to our location and fix this issue and I've been told no. How can I be the only one experiencing this!?!? Any tips or experiences others can share? Thanks in advance!