Field stripped my type 38 rifle as per the instructions in the Skennerton handbook. Reassembled and the safety does not function properly in that it does not completely lock up the bolt. It did before I disassembled it and I followed all steps correctly. Now, when I engage the safety, I cannot pull the trigger or release the striker, but I can push the bolt handle up part way. What might cause this and is there a means for me to fix this?