I have a '74 TL125 that I have been working through. I am working on the front end now and have replaced the fork seals and oil. No leaks now but the front end is still too soft. I used 10 wt Bell Ray fork oil at the amount in the book (don't remember the amount off hand). The bike is all origional and has two springs in each fork. The top spring is seperated by a washer from the lower spring and is about 4 inches long. What is the proper way to add some preload to the forks? I thought about replacing the top springs with spacers but then I fgured it might put the lowers in a bind at full compression. I'm sure someone else has had the same problem and worked it out so I am trying to benefit from others experience with the matter. I love the bike but I loose half the travel when I get on the bike. I weigh 200 lbs. Anybody got any suggestions?

Try steaching the main spring a bit.

it's a 74 bike so there bound to have some sag in them but if that doesn't work just put a bit more oil in each leg till you get it how you want it.