New here and could use advice. I have owned a 84 GL 1200 interstate for a few years now that I really love. But I have a chance to pick up a 1990 GL 1500 with trailer and 54,000 miles. for $4,000 Are there any issues I should be aware of before jumping into the early year 1500's? I am mechanically inclined and most electrical issues I can deal with.