Rat Fink 4070a tires

[DRIPTROIT 71]

I picked up a few of the Rat Fink 4070a kits from Ollies, and the tires are hard as a brick. I have built the original Round 2 release of the 4070a and those tires were nice and flexible. I had to cut the inner lip on one side of each tire to get my wheels to go together properly. They seem even harder than the very original tires. Has anyone else noticed this? Is this a problem with the compound of the tires that will cause an issue in the future? 

[sizzler]

i just completed this same kit purchased from ollies as well and the tires were soft and flexible