Exactly,

Another way to tell if your timing is off (besides feeling the power: quicker on take off advanced visa-versa) is to take a end wrench and put it on the injectors then place the wrench to your ear. If you hear that PING that doesnt sound like the rest of the injectors your timing is off, but you have to figure out which way yourself.

Putting the mark on the IP and block is a good method of telling how far you have gone. I can't remember how much you can adjust the timing by moving the pump but I think it is no more than 6 degrees or so in either direction. If you do need to adjust take all injector lines off the pump and bend the Injector lines one at a time and place back on the pump. I'm not fond of the prybar method and it doesn't work as well.

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76 300D 130K "Stella" (Sold )
74 240D 299K (Donated to Highschool For Senior Project WVO)
83 300TDT 290K (My one and only)
Sanford, NC