What's your experience with Pirate Ship "adjustments"?

I’ve used Pirate Ship well over 100 hundreds times, (found them years ago) and never had an issue that wasn’t my fault.

Under weighed an item and they charged me for it, but I’ve had several that I over weighed and they credited my account.  I always round up on dimensions and weight, just to be sure.

Only had to contact them once and they were GREAT!

I’m an absolute cheerleader for Pirate Ship!!!  Arrrgh. 

I ship quite a bit using Pirate Ship. Most of the boxes I use are from Uline and are marked on the bottom 15x15x7, 15x15x12 etc. Those are the two sizes I use most. I also always round up regarding weight. Dozens of these boxes have made it through with no issue except lately, when I have been getting dinged with regards to the pre-printed box dimensions. My 15x15x7 boxes are being charged 16x16x8 and the 15x15x12 is being charged 16x16x13. PS says UPS uses a "machine" that reads the dimensions. IDK, my friend says that UPS probably has an issue with Uline. 

Pirate Ship is awesome I use them all the time.

@nogaps 

"Don’t spend it all in one place".

I’ll have to look into Pirate Ship, didn’t know about them.

Of course round up, who needs more trouble in their life. Unless, you are repeatedly shipping and it adds up. Even then ...

I like that it get’s automatically paid, rather than me paying separate supplementary bill to FedEx, which included a $4.50 service fee for them collecting the tariff.

On the matter of weight, I always round up to at least the nearest pound, as my scales are not calibrated or certified. Same for size, I always round up to the nearest inch. I've never any issues with either PS or their contractors, and I've shipped or had shipped small items as well as items up to 100+ pounds (both as sender and receiver).