Hello Rattleman and welcome to the NT site. I believe that you are only the second member to join the NT site from Quebec and I look forward to talking with you and sharing any information.
You say that you have full length slidders on your B-12. Last year when I first saw a picture of this system used on some machines in Quebec, I was very interested in how they work and the advantages and disadvantages that are experienced with this system. I am curious about this setup and I notice that there are a few different styles of slidders used out there. When I tried finding information about these machines from Quebec, I had a hard time due to my inability to speak French. You rattleman certainly don't have to apologize about your writing in English as it is fine.
If you could, I am sure there are many other members that would like to hear more about the slidders that you use and how they are installed. As they say, "a picture is worth a thousand words". If you are not able to, I will offer to post any pictures for you.