I had one of them on my 461, them little screws got loose in a few tanks, ended up loosing two of them, other two were so loose that the deflector was ready to fall off. I got new screws slightly larger used red loctite to hold them in, they still loosened up and lost a few of them. Tried pop rivets next, that lasted about 10 tanks, and they rattled loose. I would not spend the money on one of them again. But that is just me, YMMV...
@Red97 makes a nice deflector, get a hold of him if you want to add a deflector to the side, buy a few t-27 torx screws in m5 or m6, and a couple of all metal locking nuts, put them on with red loctite, shouldn't have a problem with them getting loose.
I have one of these aftermarket DP covers, after 3 years of firewood use, it still looks as good as the day I put it on,
https://www.ebay.com/itm/STIHL-CHAI...391318?hash=item51ff2b7dd6:g:unIAAOxyNo9Sp5cN
Worst case, if the paint does not hold up, you can always repaint it. DP cover $12.95 vs $10.95 for the deflector, I would not waste the time jacking around with that deflector. Just bolt a DP cover on, retune, cut wood.