Yes. Don't do it. That spring isn't strong enough for the way they design the lasermax slide lock.
Best case scenario, your laser will switch itself on and off during recoil. Worst case, your slide will fly off your gun because the slide lock won't have enough pressure keeping it in the "locked" position. That's probably unlikely, but over on gocktalk someone says that very thing happened to him because he did what you're doing.
Actually, I have the LaserMax spring and I'm having a problem with it moving positions during recoil. It's next to impossible to get ahold of Doug in their support.
This is the third issue I've had with my lasermax. I had to polish down the switch because they put too much epoxy on it and it caused a bad connection. I also had to have the battery cap replaced. This thing is brand new, and I'm not thrilled with it at all.
It's been three days since I last called LaserMax and I still haven't gotten a call back. I think they're sick of dealing with me. I'm not a difficult person, but I expect a $260 product to work out of the box. I'm fixing to uninstall the thing and sell it on the EE for cheap.
Wanna buy a lasermax for a glock 23?
Sorry for the rant, I'm just getting frustrated with them.