Mutane suna biya da yawa da kuma yawan kulawa ga aikin birni, kuma amfani na Sphorlt yana ƙaruwa. Yawan aikace-aikace na tashar tashar hada hada hade ta dabi'a tana girma da sauri.

Tashar Asaffi mixa za ta haɗu da wasu kuskure ko ƙasa da haka yayin amfani. Abubuwan da aka fi sani da wuraren da ba a daidaita su da layin dogo ba. Wani lokaci za a sami wasu hayaniya da jin daɗi. Babban dalilin wannan shi ne cewa bayan wasan shayarwa wanda aka hada shi yana aiki na wani lokaci, za a fitar da silinya na bushewa na ciki zuwa babban zazzabi da kuma gogaggen dogo.
Yanayin da ke sama kuma zai kasance tare da tsananin girgizawa, saboda wasan kwaikwayon na wasan kwaikwayon zai kasance kai tsaye a ƙarƙashin aikin bushewa da matsayin da muke tallafawa na biyun za a yi skewed. Lokacin da ake haɗuwa da wannan yanayin, mai amfani ya kamata ƙara maɗa man shafawa zuwa matsayin adireshin da ke tallafawa da layin dogo bayan aiki na yau da kullun.
Bugu da kari, ma'aikatan kuma daidaita dauri na gyaran grofing goro yayin ƙara man shafawa a tsakanin dabarun goyan baya da kuma dogo sosai, saboda sharar gida na iya aiki da kyau, duka Za'a iya jaddada maki lamba a kankam, kuma babu girgiza.