Hi guys, Hoping I can pick some brains for some advice. Last week I went to do an oil change on my car only to find my trolley jack won't lift at all. I checked the fluid level which was slightly low, so having refilled it and bled it as per the instructions it still won't lift. I don't know much about jack's a so don't even know where to start. Its a sealey 3000cxd. Any ideas?