wow you really went big if all the gears is replaced,lot off things to time for example feed timing first beforehook timing.basic on feed timing says that at moment needle touch needle plate on way down, feed dog should be about ,5mm below needle plate.turn handwheel normal direction until needle is about 5mm from bottom dead centre on way up,at this time hook point should be close to needle eye.loosen gear at bottom of hook to adjust hook
johan
November 2012