OK... Just to tell you now this is going to be hard to explain.
I was trying to make a simple redstone t flip flop (also a type of timer) but it would not let me push blocks, with any type of piston, west. When I would try, it would just show a little black, kinda smoke, particle above the piston once it got power. The weirdest part about this is I could still push blocks east and power a piston without a block in front of it west. I have no idea why this could be happening but if you need more clarification on the issue just ask me in game and I can show you what I mean.