On the radiator leak really check the upper and lower hoses as they are alot of the time they are really old. I have found more leaks from the hoses then the radiator itself. If the top or bottom of the tank are leaking then the radiator will have to be pulled and easiest thing to do is to find a radiator shop that can braze it. I would also at that time also have them "rod" the inner parts of the radiator and you will have then a complete rebuild of the radiator and not have to worry about it. If the radiator is rodded out I also would take the hoses off and go to NAPA and have them match or look up a L185 hoses as I believe that they are the same (I am not absolutely sure on this) as when I got my L1801 it had brand new hoses on it 7 years ago and never had to have them replaced. If you can not find a rad shop then a new radiator is the only option but that is expensive and you will have to order a radiator for a L185.