I've just built a counter on veroboard & its working great. I have made a couple of changes though, the power supply and reset pins have a 100nf capacitor to ground, & the 33k resistor I've swapped for a 10k to speed it up. It now counts every 1.5 seconds.
I've also got 150 ohm resistors in series with the LEDs. They are taking about 10ma. The power supply I'm using is 9v.
It's just a counter with standard 3mm red LEDs I can't be arsed to make a cube.
Hope this helps
Don't give up