My transmission jack has developed a serious leak, seems like it is coming from around the lowering knob. This jack looks almost identical to the Sunex 7793c series, except for the pedal load release. I bought it second hand 5 years or so ago and I can’t seem to figure what kind it is. I would like to buy a seal kit, but I am unsure what I have. I would appreciate any assistance in figuring out its identity.