Hi runitoncers!

I have been playing PLO50-100 for last 2 years. I think Im at the TAG side, my numbers looks like 27/21/9. Im having problems with this guys who are potting every hand preflop, 3betting a lot, and betting big a lot of streets, and I dont know exactly what to do with my ranges. I feel like they are exploiting me for overfolding. I think that his strategy is a lot more exploitable than mine, but I dont really know how to do it. I just feel lost in some spots where I see myself calling flop just with second pair and feeling stupid when my hand dont improve and I have to throw it into the muck on the river after losing 2 bets.

I have been 4betting those guys a decent amount with hands that have a good hot equity (thanks Coldwell's Hot and Cold equity), and shoving almost any flop. But they are always calling-deciding flops, and this is not working for me at the time. I also have seen Coldwell's "how to play maniacs", but it doesn't work too. I feel like they are narrowing my own range preflop a tone, becouse I focus on playing against this guys tighter than my usual play. 

Maybe it's just that I'm running bad in that 4bet spots where you play for your hole stack, but I dont really know. 

And thats it!! I wait your coments!