I am looking at replacing the valve seals with the heads still on. 345 in a 73 Scout. I was wondering about the valve spring compressor. I have found one that works with the shaft-style for the Ford and Chysler and was wondering if it will work on the IH engine. It is just a simple lever type, but I do not want to order it if it will not work. Plan on using compressed air to hold valves up. Is there anything I need to look for or consider while I have it apart. Smokes when I first crank it up, clears up after it runs a while. Compression test shows good on all cylinders. Thanks.