440 crawler

[wolf run shoals]

HI all,

I recently purchased a 440 crawler with backhoe. It needs lots of work. How hard is it to pack cylinders?

I read in earlier posts, mention of possible replacement track rail guides?

The lift clandirs for the loader leak, or at least the loader drops steadily as soon as you let go of the lever. as does the backhoe. Is there a sure fire way to tell whether the cylinders are leaking or some other valve?

Thanks

Steve