Netafim irrigation spikes - leaky barbs?

[nniemiec]

I think some of you guys use this particular system -i installed it to poly tubing using the supplied barbs & I have all kinds of leaks at the barb / poly tube ★★★★★★★★ despite using reduced water pressure compensation.

Any advice on how to minimize the leakage? I feel like a lot of water is leaking despite using a 5/32 in. drill bit (which is smaller vs. the supplied punch) still leaks?