It just depends on who does the best job.

Like... Some shops drill into the counterweight and then just weld the mallory in. While better shops will drill across the counterweight and press the weight in. Some shops will just keep drilling holes when the crank is built for a heavier bob weight. Better shops will cut the counterweights down to start with making the crank lighter.

Some things just take more time. Some shops are lazy.

You choose.

Leon