The ends of the springs aren't ground flat like on the original spring so that makes it sit a little bit differently when installed effectively making it a bit longer. 1st couple of minutes using it the water stream wasnt all that strong but after a bit it started working fine. Several hours of use so far and no issues. In taking apart the gun to replace the spring I noticed that the oil port really only seems to lubricate the ram rod, not the spring. So will be opening gun up to let spring chamber dry between uses.

The seller was very prompt with the shipping. The spray guns that use these springs are very hard on the springs which generally fail after a while from metal fatigue. These springs have been working great and last a decent amount of time. I'll be purchasing more.