Some time back, I found that closeup lenses that were designed to screw onto the front of 35mm camera lenses work just like the much more expensive BullZeyePro booster lenses, for a lot less money. I have a couple of +2 diopter that have a 37mm thread that I believe is too large for your Weavers, but it would be really easy to make a slip on adapter. They fit the eyepiece threads of my 36X Bausch and Lomb scopes. I found a couple of leather cased three lens sets that were NOS on Ebay for about $20 each. The ones that I use give me about a 20% boost in magnification and magnify the entire field of view, including the cross hairs. The angle of view is unchanged. My sets came with +3 lenses but because of my vision with glasses I cannot screw the eyepieces far enough forward to properly focus the eyepiece(I run out of threads.). With the lenses that I use I lose about a half inch of eye relief. Comparing the sharpness with and without it is better with. I would not have expected that. Mine are Tiffen brand. I gave one of my +3 lenses who was able to use it on a 36X Leupold. I think that that was because his vision is such that without the lend his eyepiece had more threads available to screw the eyepiece forward.
The link that I gave you goes to a page that says that they do reticle changes for late model Weaver Ts. The work is done by Bill Ackerman's daughter.