[jillybean]

Some of my recent posts and the problems we have with hands has encouraged me to take a look at our forcing 1nt auctions.
We have diverged from the mainstream forcing 1nt (6-12) by allowing partner to respond to a 1M opening with a sub minimum hand with a long suit. This forces the opener to stretch to bid 2♣/1nt to allow partner to sign off in their suit, much the same approach when we respond 2♦/[2♣ to stay out of the way of the strong hand.
With the possibility of partner having a sub minimum, our 1M 1nt 3x is invitational+ and as mentioned before, non standard and probably non playable.

I assume that there is an easy fix, stop responding with sub minimums and practice disciplined bidding. I keep slipping into bad habits.