No personal experience w/ MAGs (but I hear they rust some of the screws), but I do have a SEN700. Had it a couple of years and go through an impeller about every 6 months or so when it was used for a return pump. The impeller usually got stuck on the ceramic shaft from heat I think as sometimes...
jdamon;
Another Durso mod I picked up on another board is to put a cap on the standpipe and drill a larger hole in the [/i]side of the cap. Then you can twist the cap to regulate airflow. It works pretty well on my setup and that way you only have to drill once and if you change flow rates in...
I live in Shawnee and have had harmon glass drill and cut glass for a couple of projects. The one at 63rd and Neiman has been friendly and reasonable to me.