The 1969 280SL has a tall fuel pump. After removing the sending unit, a new tank was installed. The tank screen is now clean and a new fuel filter installed. Is there a screen in the fuel pump at the inlet? I can’t find one on this site or the manual I have. The old tank was nasty and I’m guessing some gunk got past the tank screen. The car will now idle but at 2,000 rpm will eventually start to miss and run poorly? Thanks.