Hello, I recently acquired an old bike and am not sure of its maintenance history. The bike will not start, I took out the plug, looked fine, sparks fine grounded against the frame. I also did a compression test, and, quite mind blowingly, the compression barely even registers, is probably at about 10 PSI (the tester doesn't even have markers that low). The owner said it was running fine on a push start weeks before. I'm wondering though, is the (near) zero compression a sign of anything else? It seems absurdly low. I can pull the kickstarter down with my pinky. Does the lack of compression 100% indicate that it needs a top end rebuild or are there any other things I should check first before going through with that? I also can't even get the clutch to disengage, not sure if it's cold oil, from sitting in storage or what, but I will probably need to overhaul the clutch and file down the basket etc. Any tips appreciated, I am somewhat new to motor work!