Can you comment on the feel of this modded board versus 45g FC660C and 55g RF?
Certainly!
I really liked the 45g 660C, the swithces felt really nice and snappy all the same. I did sometime's feel that it was a touchhh to light for my tastes though. The 55g domes don't feel
drastically different - but they do feel more tactile. They also feel more crisp, like any previous play in each keypress is now gone
That slight bit of extra weight is perfect too, It's really tasty.
I found the difference between 45g and 55g on the 87U far less pronounced (bear in mind I am used to the 660C though, so the changes in feel are more apparent). When tapping a 45g key vs a 55g 1x1 key with one finger they were only a hair different. But I imagine that the experience of typing on a whole board of 55g switches would be more noticeable if you were used to the 45g 87U.
You had to cannibalize a perfectly working Realforce to do this mod?
Cannibalize is such a harsh word.. It's tested and working 100% fine with 45g domes back in place of the 55g ones. I'm going to place it on the classifieds shortly.