Hi there Magnum guy. Welcome to the site.
It's good to hear you got it fixed. Changing the crank sensor is something you could have changed yourself - 30 minutes max. The crankshaft sensor is about a $15 dollar part online. If you find yourself a good dedicated Magnum website or one dedicated to the LX platform it is from, you can find a wealth of knowledge that may help you save money in the future.