I sent Trinidad 40 handle to Jigging Master to examine whether existing JM power handle fit to the reels. However their response is negative. JM handle with shaft designed for Shimano fit to Ocea Jigger (Japanese domestic Trinidad), but it doesn't fit to TN 40/50. The only way to isntall it is to drill off the original shaft and use standard Accurate shaft. I asked them to make special shaft for TN40/50 which is also good for Torsa. With the new shaft you can install JM power handle with any modification or drilling. The new shaft should be available in July.