I kind of understand the problem. Once you really get used to some of the lighter switches, and when you like how they feel, it can be hard to get accustomed to the heavier/stiffer switches again.
I experienced the same thing going from a 45g to a 70g actuation keyboard. At times I would hit a key with the intention of typing that letter, but nothing would happen. My "tap" on the letter would literally be too light for it to register.
However, I often find that if you stick with it, you get more used to it, and it will not be as big of an issue. If you really like the lightness of the reds, but want to try other switches (or want something with a little bit of tactile feedback) then browns or topre 45g would have been a better choice than blues.