Just started putting the DP together, fitted a nice cheap MX2 cups in greased up the bearings, then WTF is going on with the thread, can't get the headset nut on past 4 threads, 1" headset are there 2 types of pitch? Found an old one and it fits fine but it's not pretty, pork chop has got a red one but I don't know if that will fit, help!!!!!