My Foodsaver 550 unlocks when the on button is pressed. What can I do?

SOURCE: foodsaver compact vac 550 sealing strip doesn't seal

My machine stopped working because the sealing ribbon was broken and the tape was worn. FoodSaver no longer does repairs. I knew the wire was called nichcome ribbon so I searched that. I checked the resistance of the ribbon on my machine, it was about 3.8 ohms. I found a site called mpakonline.com and from their site I bought 1/16 x .005 nichrome ribbon and 3/8 x 5 MIL. x 18 YD Acrylic Teflon Tape. The total cost of these items was about $36.00, the ohm value of their ribbon was 1.66 somewhat less.I used ends from radio shack made the repair and it has been working fine for the last two months and I have enough material leftover for about ten more repairs.