I received my carriage blade holder and I asked David from US Cutter to please email me tips and or instructions on how to replace. Long story short no email and when I call US Cutter and try to talk to David trying to get Obamacare on the first phone call ) The new person said he can explain it, "it's real easy". Needless to say my wife and I want to SCREAM! He said to remove the carriage from the tracks (way easier said than done) then remove ribbon cable then remove two screws on back removing little metal plate covering rubber track band and put on new carriage and work steps backwards. When I removed the two screws the rubber track fell apart and has two ends. Is this correct? I thought it was going to be one continous ruber band. I keep trying to put band on but I am left with a lot of slack in the band. Is there a band tensioner? ANY help would be appreciated. I had my PCUT for the last 7 years and has been flawless till it snaped a blade holder arm.