Hi all, I have a General (made in Canada) drill press that I bought in the late 80s. Still runs smooth as silk and quite accurate, so no need to replace it. I had the option to buy it with a geared column for raising and lowering the table height, but did not (have regretted it ever since). I've rigged up a scissor jack that's clamped to the table with an aux. table on top of that, but it's cludgy and not stable. Are there any aftermarket options that I can use to convert my drill press to one with a gear adjustable table? The steel column is 2.75" in diameter. Thanks.