Hi everyone just joined this forum and I enjoy all the rides and ideas I see here. I am from texas from the rgv area. I have a mountain bike which I use as a daily commuter for work and is so comfy my first build was a beach cruiser but I enjoy the looks of the mountain bike. I want to get a 36t sprocket but don't know if I should wait until the engine is past the break in period or it does not matter if I put now?