im taking out the interal overflow on my 75 aga. just wondering if anyone else has done this and how they did it. what i was thinking was cut out as much of the overflow as i could with a dremel, except for the small spot where the overflow is siliconed to the corner of the tank over the clear silicone. then use a razor blade of some sort to get behind whats left of the overflow after cutting it out. btw its a newer version (not the corner overflow). also, is a razor the best way to get all the silicone off?