The rear tyre looks like its the wrong size and why it proabably sat so low. Should be a 5.10 or metric equivalent. i would have kept to 400-406mm but thats me. Just watch your chain buffer on the swingarm now because with the longer shocks your swingarm will be bent down more and the chain will rub on the buffler block a lot more and wear it out quicker. Also before you head off on your first ride, take the springs of the shocks, re-fit them with out the springs and have the correct rear tyre fitted. Then compress the rear end to make sure the tyre doesnt hit the air box and under the rear fender and also that the rear sprocket doesnt hit the muffler otherwise it will all end in tears and ive seen how nice your bike is comming along so it would be a shame to damage a new part. Do this at maximum and minimum wheel adjustment so you know its ok no matter where the axle is in the slot. And yes its not uncommon for to strike those clearance issues, infact i have original tests and in Trail & Trak the test riders found that with the standard shocks the sprocket would hit the muffler. This was on the 250 though with the 52T sprocker. With the smaller 400 sprocket it might not get so close. That also explains why a lot of mufflers are dented undeneath. A few of us did some testing a while back on the PE forum and really 417mm is the absolute maximum you should go because at that point you also create chain adjustment problems. 425mm is more so i would really check out your chain adjustment set up too which would have to be spot on. I reckon you can get away with it on the 400 as i know someone else who has 425mm shocks but 425mm on the 250 would be a no go with the larger sprocket, but its worth to check it all out first before riding it. As oldfart says, it will steer quicker but you may like that.