Hi, I have an old Moore unidrill 4 metre box drill. Although getting on in years it's ideal for our farm & workload. Only issue is the coulters don't seem to last long & are expensive to replace. I am considering getting it in workshop next winter and modifying somehow. Wondered if anyone has been down this route already and converted theirs? Another option is weld on Ferobide strips to the coulters to prolong life, but due to the coulter design will increase drag and disturbance of soil maybe? Any ideas would be great thanks.