I noticed when i hit a bounce or apply front brakes on mu 250 Lifan,the front end has alot of give,almost shaky,not tight,i took it to my local service person and he wants to put thicker oil in the front cylinders ,see if thats the problem,did anyone ever hear of this happening and why.Its only got 1,200 mi,and is a 2006,tires are inflated perfectly also,thanks