Brandedtack

OK, I have switched needles and thread and continue to have the same problem. The hook timing and spacing is correct. Now I'm having trouble with it picking up the bobbin thread entirely. It works when I thread it but not when I sew. Can the thread tension effect this? If so, where would you set it to start? Everything else seems to be set correctly, but I'm obviously not setting something right. Right now I have a 22 needle and #138 thread and have tried sewing very thin leather as well as jean material...no luck.

Thank you Constabulary. That is exactly where that screw belonged.

I recently purchased a new Consew RB-5 and have been pleased with it, however, recently I have had trouble with it skipping stitches. I was sewing leather with it with 207 bonded thread and a #23 needle. I have even switched to 138 with a 22 needle and it still skips stitches. I have included a photo of the leather I was using before it started acting up. I am certain that it is threaded properly. Also, I wound bobbins today to try the smaller thread (obviously running at a higher speed) and after completing that, I attempted to sew and a small screw (pictured) fell off of the machine from somewhere and landed in the front of the machine. I can't figure out where it came from. It is very small and doesn't appear to have come off the exterior of the machine. Any help would be greatly appreciated.