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Did this happen again?

its not the matter of legal or not you wont be put in the jail so dont worry. you may be fined though.

Dent removing Vacuum is available in Ace Hardware.

Its fuel system issue, and that too fuel pump delivery is getting delay when tank is full. I had same problem but exactly opposite one. Less than half tank fuel it take 5 -6 cranks to start and also hesitate while driving with full throttle. On checking it seems fuel pump O ring was bad and loosing the pressure. Mechanic repaired the fuel pump and it was fine.

Check if some of the spark plug isnt bad, Air filter isnt clogged. Then get computer check and see if it show Air flow meter problem or Crank Shaft position sensor problem.

I would start with spark plug check first, then ignition coil and plug wires. In end i will doubt fuel filter or fuel pump.

I suggest do it after you fit the AHC pump as its better to bleed lines as AHC fluid is subject to lot of moisture and its good if you change the fluid and bleed it once for all. Here is the procedure to bleed AHC pump One can of the ahc fluid is usually plenty. 1. Set the vehicle all the way to low (Reservoir full) 2. Remove all of the old fluid from reservoir. Fill with new clean fluid, I usually put the whole can in. 3. Start vehicle and let suspension equalize to "n" position. 4. Turn vehicle off. 5. Start at one of the back accumulators (doesn't matter which one) and using a hose on the bleeder, open very slowly and let weight of vehicle push fluid out. Close bleeder when vehicle is close to bottom. THIS IS THE STEP YOU COULD GET SQUISHED IF YOU ARE NOT CAREFUL!!! 6. Start vehicle and repeat steps for each corner accumulator. 7. Usually one cycle at each corner is sufficient. If you are going to do it more than once you will need more than one can of fluid. Cautions - don't crack bleeders while car is running. Vehicle will try to compensate for the leaking corner and you will have a big high pressure mess. Fluid resembles very slippery brake fluid and is a PITA to clean up - so keep that in mind. Also this is usually done every 60,000 km.

My 2006 GS300 is generally very smooth on road but after pressing the brakes firmly, the front side of the car starts to wobble and it dose this at various speeds which lasts only for a short time. this is now happening more frequently. what could cause this please advice