I was just told by altech that they do not have the adjustment screws since the machine is sold old. I am guessing it is around 60's. Any clue where I could get these?
What is the model # of yours?
I have a 2 of manuals for them that you might like to read. They give full instructions for the bade installation and maintenance. One of them is at http://altecep.com/altec-manuals.htm . If you post your email address, I will send you the other.
For the adjustment screws, I bought Big set screws that were grade 10 fine thread. I only needed 2, but they cost me $12. each, LOL. It has the 3/8" Allen at the one end to do the adjustment. The other end has a cup end like most set screws which the blade sits on real nice. I bought them the same Leight as the original adjustment screws.