flange

Does anyone know a good source for a 2-3/8" flange base for an aluminum radar post mounted on the transom? The Navcom flange base mounts sold by Edson are $80. I also need a rail bracket for the 2-3/8" aluminum post, which costs about $120 at Edson. $200 for both is on the high side. Thanks...

I'm trying to install my PSS and can't get the iron drive flange off the shaft. I have tried penetrating lube, heat and a BFH. I would use a gear puller but only have 2 1/4" of clearance. Any other ideas?