I am familiar with all the wei-ya 19" replacements, high impence, low impedence, small neck, large neck. I have a wells gardner 25" monitor here that needs a new chassis. I ordered an 825hr chassis, which is supposed to replace 25" monitors, however when i take an impedence reading of the tube i am getting 40, which is high. this chassis is only for 6-12 ohm. I dont see another chassis available for high impedence, 25" monitors. Anyone know what to do here, I am sure Ken Layton will know!