Hi I have removed and refitted the drivers door on my series 3 lwb. I re painted the door bottom and fitted a new door top. Now I have refitted the door it comes open when I go over a bump (even on road use).when I took door off I left hinges fitted to bulkhead . How do I cure problem?

I have a series ? 109 diesel land rover on v5 it says declared manufactured 1970. It's also says date of first registration 01/11/1985. It says 2249cc heavy oil. Chassis number starts 251 an ends with a G. When I search this on internet it says it's a series 2a 109 petrol. Is it a 2a or 3 as it...

Hi I'm new to land rover ownership having just purchased a series 2a 109 diesel