When your bolt arrives and you realise there is a difference between parker G2 and pilot G2. FFS not blaming this on karas or anyone but myself for being a new person to the pen game. Unfortunately I don't like the Pilot G2 refills or at least any I have tried as they just don't match the feel of the parker G2's. I have been able to use the spacer included and the spring from my parker jotter to get the parker G2s to fit but it doesn't feel right. Anything I can do since you can't buy the parker style barrel and also I'm in UK so shipping is bad. I've been using the pen for a bit too as I only realised this today plus I got the top bit (not the barrel) engraved. This sounds so stupid but please cut me slack