I'm adding a bathroom into my bedroom and removed the hardwood flooring and T&G sub-floor. I am ready to install a 3/4" plywood sub-floor to replace the old T&G, but the joist closest to the outside wall is between 1/8" and 1/4" higher than all the other joists, which is causing the sub-floor...

I cut out some old tongue and groove sub-floor to install a new bathroom in my bedroom. Now that the plumbing is complete, I've cut 3/4" plywood to for the new sub-floor. Unfortunately, the old tongue and groove planks are about 1/16 to 1/8 inch thicker than the plywood I've laid down. How...