The Niagara will take more than a few seconds of heat if its applied to the top of the screw. The bearing inserts and rods provide a big heat sink before the heat reaches the threads. I was able to apply heat right on the boss on the wheel that the screw threads into using some resistance soldering tweezers. You may be able to get a fine soldering tip in there but using a torch would be risky as it may damage the plating/coating on the rods.
Also don't assume just because an item is made in Asia that the screw heads are JIS. I tried a JIS screwdriver in the Niagara rod screws and found a phillips fit better. The JIS driver would have rounded off the screw socket.
Pete
